The Dagenham-based light-middleweight is hoping to move quickly ahead of pro debut.
The 26-year-old will be training at Dagenham Legends Gym under Jamie Williams and alongside IBF European middleweight champion Joe Mullender.
Frearson is hoping to move quickly in the paid ranks with an April debut on the horizon.
“When I first started boxing, I never thought I’d end up signing for such an established company. I was originally just doing it for a bit of fun, but it’s gradually progressed to here,” said Frearson.
“Realistically, I think April will be a good date for me to get out. I’m in this for a good time not a long time! I want to progress as quickly as I can.
“I see a lot of people I know around my weight that have been doing well but I think I can beat them, so I want to get a couple of four-rounders and then get straight into the mix domestically and around my area in London.”
A former kick-boxer, the qualified bricklayer had an unusual start in boxing before taking up the sport more seriously, leading to a stop-start amateur career, but he hopes his pro move with MTK will lead to a more stable fight plan.
“I was doing my brick-laying course and someone brought some gloves into the college,” he explained. “We used to spar in the car-park! After that, one of the lads said I should come along to a club, so that’s how I got into it.
“I was a kick-boxer as a kid and then when I was about 17 I started boxing at Hornchuch and Elm Park. I’ve trained in few clubs – Hornchurch, Dagenham and West Ham – because I’ve worked as a bricklayer and sometimes I’ve just had to train where I can after work.
“As I was going up through the levels there was a bit more pressure to balance it with work, so I’m hoping this move helps me dedicate a bit more time to the sport.
“I’m under no illusions. I had a good but not a glittering amateur career, but I’m looking forward to progressing quickly and making my mark on MTK’s shows.”